Admin panel: refresh problem and potential privilege clash when adding a new user

When adding a new user, in the "New user" popup, I can set their privileges for a specific project (manage layouts, manage comments) via "Projects" tab even if they were not set in the "Privileges" tab. This is not updated on save. This way the user looks like without certain privileges, while he can have them on projects.

When added a new user, he was not immediately visible in "Projects" -> "Edit" -> "Users" subtab. I had to refresh the website to have the new user visible in "Project -> Users"